ispc

Why are SIMD instructions not used in kernel?

由 好久不见. 提交于 2019-12-08 20:38:35
问题 I couldn't find much use of SIMD instructions (like SSE/AVX) in kernel (except one place where they were used to speedup parity computation of RAID6). Q1) Any specific reason for this or just the lack of use-case? Q2) What needs to be done today if I want to use SIMD instruction, in say a device driver? Q3) How hard will it be to incorporate framework like ISPC into kernel (just for experimentation)? 回答1: Saving/restoring FPU (including SIMD vector registers) state is more expensive than just

SIMD programming languages

由 隐身守侯 提交于 2019-11-30 05:05:32
In the last couple of years, I've been doing a lot of SIMD programming and most of the time I've been relying on compiler intrinsic functions (such as the ones for SSE programming) or on programming assembly to get to the really nifty stuff. However, up until now I've hardly been able to find any programming language with built-in support for SIMD. Now obviously there are the shader languages such as HLSL, Cg and GLSL that have native support for this kind of stuff however, I'm looking for something that's able to at least compile to SSE without autovectorization but with built-in support for

SIMD programming languages

由 删除回忆录丶 提交于 2019-11-29 02:54:12
问题 In the last couple of years, I've been doing a lot of SIMD programming and most of the time I've been relying on compiler intrinsic functions (such as the ones for SSE programming) or on programming assembly to get to the really nifty stuff. However, up until now I've hardly been able to find any programming language with built-in support for SIMD. Now obviously there are the shader languages such as HLSL, Cg and GLSL that have native support for this kind of stuff however, I'm looking for
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